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J. H; MAGGARD. AUTOMATIC GRAIN MEASURE.

No. 423,876. Patented Mar. 18, 1890.

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- UNITED STATES PATENT OFFICE.

JAMES H. MAGGARD, OF IOWA CITY, IOVA, ASSIGNOR OF ONE-HALF TO G.

B. LUMBARD, OF SAME PLACE.

AUTOMATIC GRAIN-MEASURE.

SPECIFICATION forming part of Letters Patent No. 423,876, dated March 18, 1890.

Application filed October 14, 1889- Serial No. 326,942. (ModeL) To all whom it may concern.-

Be it known that I, J AMES H. MAGGARD, a citizen of the United States of America, residing at Iowa City, in the county of Johnson and State of Iowa, have invented an Improved Automatic Grain-Measure, of which the following is a specification.

My object is to provide a simple, cheap, strong, and durable mechanism for automatically opening and closing a measure connected with the elevator box or conveyer, so that all kinds of grain, light or heavy, can be auto matically measured in bulk without depending upon their weight and force of gravity.

My invention consists in the construction and combination of a measure having an adjustable partition, mechanism for operating the partition to open and close the measure, with a grain elevator and conveyer, as hereinafter fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which- Figure 1 is a side View of the top portion of a conveyer to which the measure and operative devices are attached. Fig. 2 shows the 7 adjustable partition attached to a section of the measure. Fig. 2 is a detail view. Fig. 3 is an enlarged detail view of a part of the mechanism used for operating the partitions in the measure.

A represents a grain-conveyer of common form and adapted to be applied to a grain thrasher and separator in a common way.

Bis a measure of circular shape fixed to the bottom of a spout of the conveyer. It has an opening at its top to admit grain and a corresponding opening at its bottom to discharge grain.

C is a rock-shaft in bearings formed in or fixed to the centers of the sides of the measure.

D is a rigid partition fixed to the shaft O.

D are flexible covers on the opposite sides of the rigid partition. They are permanently attached at their top edges to the top portion of the partition D and adj ustably connected at their lower edges with the center of the bottom portion of the same partition in such a manner that they can be bowed outward, as indicated by dotted lines, for the purpose of enlarging or diminishing the size of the meas- 5o ure to suit different kinds of grain.

f is a cross-bar fixed to the flexible covers and extended through a slot formed in the rigid partition.

is a screw extended through a screwthreaded bore in the bar f and the slot in such a manner that when the screw is rotated it will move the bar up or down, as may be desired, for the purpose of spreading or contracting the flexible covers D.

D are flexible packing-strips fixed in the top and bottom edges of the rigid partitionD to engage the inside circularface of the measure as required to prevent grain from passing by the ends of the partition.

No. 1 is the driving shaft in bearings at the top of the conveyer.

No. 2 is a shaft in parallel position with shaft No.1 and connected therewith bymeans of gearing on the outside of the conveyercase, as indicated by dotted lines.

g, clearly shown in Fig. 3, is an eccentric on the shaft No. 2.

g is a lever extended across the outside of the conveyer and connected with the eccentrio and shaft by means of a frame g, fixed to the lever in such a manner that the lever will be vibrated when the shaft and eccentric are rotated. The front end of the lever extends through a slot in the spout of the conveyer and has a paddle g, attached in such a manner that when the measure is full the paddle will press upon the grain and elevate the front end of the lever and depress the rear end and in so doing will pull down the rear 8 5 end of a stop device h, that is pivoted to the conveyer at p.

h is a link that connects the stop device with a bridle at the rear end of the lever, and h is a spring attached to the conveyer and 0 connected with the stop device and lever in such a manner that it will in its normal condition retain their rear ends elevated.

J is a gear-wheel placed loosely on the shaft No. 2.

7c is a trip device pivoted to the outside face of the wheel. It has an arm 70', extending up to engage the elbow-shaped front end of the stop device 71, and an elbow-shaped projection is", that engagesa cam 70' on the end of the shaft.

No. 3 is a rotating shaft in parallel position with the shafts Nos. 1 and 2. It has a crank on its end that is adj ustably connected with a crank on the end of the shaft 0 by means of a rod 712, in such a manner that each halfrevolution of the shaft No. 3 will vibrate the partition D, as required to open the bottom of the measure.

N is a wheel on the end of the shaft No. 3, that engages the wheel J on the shaft No. 2.

0 are cams on the side face of the wheel N.

r is a flexible roller-bearer fixed to the outside of the measure B in such a manner that a roller on its free end will engage the cams 0 to aid in arresting the motion of the wheel N at every half-revolution, and also to aid in retaining the partition D stationary in the measure.

In the practical use of my invention, when the partition D is in position, as shown in Fig.1, the grain dropped from the spout of the conveyer will be retained in the measure until the one side is full, and then the paddle on the front end of the lever will press upon the grain and actuate the lever as required to free the arm L of the trip device from the stop device 71, so that the projection k will engage the cam k' on the shaft, and the wheel J will then make a complete revolution and the wheel Na half-revolution; and as the shaft No. 3 is thus actuated to make a half-revolution itwill, by means of the cranks and their connecting-rod, rock the shaft C and thereby reverse the position of the partition D in the measure as required to empty the measured grain and to direct the grain from the spout at its top to the opposite side of partition and duplex measure. The two parts of the measure will be thus successively filled and emptied as long as the conveyeris in operation and all the grain automatically measured.

I claim as my invention 1. A duplex grain-measure having an open top and bottom, a rock-shaft extending horizontally through the center, a rigid partition fixed to the rock-shaft, and flexible adjustable covers 011 the sides of the rigid partition, to operate in the manner set forth.

2. The combination of flexible and adj ustable covers with a vibrating rigid partition and a grain-measure, for the purposes stated.

8. The partition D, the coversD, the crossbarf, and the screw f, arranged and combined with the measure B, substantially as shown and described, for the purposes stated.

4. The eccentric g on the shaft No. 1, the lever g, having a fixed frame g" at its center, and a paddle at its front end, the stop device 71., the spring h", the wheel J, the trip device 7;, having projections if, and 7c", and the cam k on the shaft, arranged and combined to operate in the manner set forth, for the purposes stated.

5. The eccentric g on the shaft No. l, the lever g, having a fixed frame g" at its center and apaddle at its front end, the stop device h, the spring 72/, the wheel .1, the trip device 75, having projections k and 7t, and the cam k', the shaft No.3, the wheel N, and the vibrating partition D in the measure B, connected with, the said shaft No. 3 by means of cranks, and a rod, arranged and combined to operate in the manner set forth, for the purposes stated.

6. The elastic roller-bearers 0', in combination with the measure B, and the wheel N, having cams o, for the purposes stated.

. JAMES H. MAGGARD.

Witnesses:

O. W. STILns, THOMAS G. Onwrc. 

